[meteorite-list] A Bunch of Irregular Stones I Found (+How I Think They May Have Originated)

From: Frank Cressy <fcressy_at_meteoritecentral.com>
Date: Sat, 23 Mar 2013 12:23:18 -0700 (PDT)
Message-ID: <1364066598.70744.YahooMailRC_at_web184803.mail.gq1.yahoo.com>

You're probably thinking of a "rollover lip" which can be found on the rear side
of?some oriented meteorites.? This feature is caused by molten fusion crust
droplets being deposited around the trailing edge of the meteorite and building
up a lip around that edge.? It is NOT the fusion crust peeling back and laying
over itself.

Frank



----- Original Message ----
From: Peter Richards <pedrichards at gmail.com>
To: Frank Cressy <fcressy at prodigy.net>
Cc: meteorite-list at meteoritecentral.com
Sent: Sat, March 23, 2013 11:50:06 AM
Subject: Re: [meteorite-list] A Bunch of Irregular Stones I Found (+How I Think
They May Have Originated)

Frank, I remembered reading somewhere that fusion crusts could peel
and fold. Thank you for seconding that, especially since I don't have
the source handy. I am interested to hear that you know of outer
layers of slag folding in that way, as well. I certainly didn't know
this was very common. I was contacted by someone who described
themselves as an expert on slag of sorts last night, and hadn't yet
received an answer as to whether that was a common feature of slag.
'So does the air flow fast enough around slag to create a similar
effect as is sometimes, although rarely, seen with meteorites?' I
wonder. Or 'is it not caused by fast flowing air, as well as heat, in
the instances of this common occurrence on slag?' I, again, wonder. I
guess that's beside the point, and I'll have to take your word for it
being a common occurrence in slag.

Peter Richards
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Received on Sat 23 Mar 2013 03:23:18 PM PDT